forked from OSchip/llvm-project
558 lines
23 KiB
CMake
558 lines
23 KiB
CMake
# See www/CMake.html for instructions on how to build libcxxabi with CMake.
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if (NOT IS_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/../libcxx")
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message(FATAL_ERROR "libc++abi now requires being built in a monorepo layout with libcxx available")
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endif()
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#===============================================================================
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# Setup Project
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#===============================================================================
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cmake_minimum_required(VERSION 3.13.4)
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# Add path for custom modules
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set(CMAKE_MODULE_PATH
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
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${CMAKE_MODULE_PATH}
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)
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set(CMAKE_FOLDER "libc++")
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set(LIBCXXABI_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
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set(LIBCXXABI_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
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set(LIBCXXABI_LIBCXX_PATH "${CMAKE_CURRENT_LIST_DIR}/../libcxx" CACHE PATH
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"Specify path to libc++ source.")
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if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR LIBCXXABI_STANDALONE_BUILD)
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project(libcxxabi CXX C)
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set(PACKAGE_NAME libcxxabi)
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set(PACKAGE_VERSION 11.0.0git)
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set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
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set(PACKAGE_BUGREPORT "llvm-bugs@lists.llvm.org")
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# Add the CMake module path of libcxx so we can reuse HandleOutOfTreeLLVM.cmake
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set(LIBCXXABI_LIBCXX_CMAKE_PATH "${LIBCXXABI_LIBCXX_PATH}/cmake/Modules")
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list(APPEND CMAKE_MODULE_PATH "${LIBCXXABI_LIBCXX_CMAKE_PATH}")
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# In a standalone build, we don't have llvm to automatically generate the
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# llvm-lit script for us. So we need to provide an explicit directory that
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# the configurator should write the script into.
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set(LIBCXXABI_STANDALONE_BUILD 1)
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set(LLVM_LIT_OUTPUT_DIR "${LIBCXXABI_BINARY_DIR}/bin")
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# Find the LLVM sources and simulate LLVM CMake options.
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include(HandleOutOfTreeLLVM)
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endif()
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if (LIBCXXABI_STANDALONE_BUILD)
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find_package(Python3 COMPONENTS Interpreter)
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if(NOT Python3_Interpreter_FOUND)
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message(WARNING "Python3 not found, using python2 as a fallback")
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find_package(Python2 COMPONENTS Interpreter REQUIRED)
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if(Python2_VERSION VERSION_LESS 2.7)
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message(SEND_ERROR "Python 2.7 or newer is required")
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endif()
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# Treat python2 as python3
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add_executable(Python3::Interpreter IMPORTED)
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set_target_properties(Python3::Interpreter PROPERTIES
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IMPORTED_LOCATION ${Python2_EXECUTABLE})
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set(Python3_EXECUTABLE ${Python2_EXECUTABLE})
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endif()
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endif()
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# Require out of source build.
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include(MacroEnsureOutOfSourceBuild)
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MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
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"${PROJECT_NAME} requires an out of source build. Please create a separate
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build directory and run 'cmake /path/to/${PROJECT_NAME} [options]' there."
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)
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#===============================================================================
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# Setup CMake Options
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#===============================================================================
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include(CMakeDependentOption)
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include(HandleCompilerRT)
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# Define options.
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option(LIBCXXABI_ENABLE_EXCEPTIONS
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"Provide support for exceptions in the runtime.
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When disabled, libc++abi does not support stack unwinding and other exceptions-related features." ON)
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option(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
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option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
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option(LIBCXXABI_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
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option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF)
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option(LIBCXXABI_ENABLE_STATIC_UNWINDER "Statically link the LLVM unwinder." OFF)
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option(LIBCXXABI_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF)
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option(LIBCXXABI_ENABLE_THREADS "Build with threads enabled" ON)
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option(LIBCXXABI_HAS_PTHREAD_API "Ignore auto-detection and force use of pthread API" OFF)
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option(LIBCXXABI_HAS_WIN32_THREAD_API "Ignore auto-detection and force use of win32 thread API" OFF)
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option(LIBCXXABI_HAS_EXTERNAL_THREAD_API
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"Build libc++abi with an externalized threading API.
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This option may only be set to ON when LIBCXXABI_ENABLE_THREADS=ON." OFF)
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option(LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY
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"Build libc++abi with an externalized threading library.
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This option may only be set to ON when LIBCXXABI_ENABLE_THREADS=ON" OFF)
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option(LIBCXXABI_ENABLE_FORGIVING_DYNAMIC_CAST
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"Make dynamic_cast more forgiving when type_info's mistakenly have hidden \
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visibility, and thus multiple type_infos can exist for a single type. \
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When the dynamic_cast would normally fail, this option will cause the \
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library to try comparing the type_info names to see if they are equal \
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instead." OFF)
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option(LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS
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"Build libc++abi with definitions for operator new/delete. These are normally
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defined in libc++abi, but it is also possible to define them in libc++, in
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which case the definition in libc++abi should be turned off." ON)
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option(LIBCXXABI_BUILD_32_BITS "Build 32 bit libc++abi." ${LLVM_BUILD_32_BITS})
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option(LIBCXXABI_INCLUDE_TESTS "Generate build targets for the libc++abi unit tests." ${LLVM_INCLUDE_TESTS})
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set(LIBCXXABI_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING
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"Define suffix of library directory name (32/64)")
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option(LIBCXXABI_INSTALL_LIBRARY "Install the libc++abi library." ON)
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set(LIBCXXABI_TARGET_TRIPLE "${LLVM_DEFAULT_TARGET_TRIPLE}" CACHE STRING "Target triple for cross compiling.")
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set(LIBCXXABI_GCC_TOOLCHAIN "" CACHE PATH "GCC toolchain for cross compiling.")
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set(LIBCXXABI_SYSROOT "" CACHE PATH "Sysroot for cross compiling.")
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set(LIBCXXABI_LIBCXX_LIBRARY_PATH "" CACHE PATH "The path to libc++ library.")
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set(LIBCXXABI_LIBRARY_VERSION "1.0" CACHE STRING
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"Version of libc++abi. This will be reflected in the name of the shared \
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library produced. For example, -DLIBCXXABI_LIBRARY_VERSION=x.y will \
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result in the library being named libc++abi.x.y.dylib, along with the \
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usual symlinks pointing to that.")
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# Default to building a shared library so that the default options still test
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# the libc++abi that is being built. There are two problems with testing a
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# static libc++abi. In the case of a standalone build, the tests will link the
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# system's libc++, which might not have been built against our libc++abi. In the
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# case of an in tree build, libc++ will prefer a dynamic libc++abi from the
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# system over a static libc++abi from the output directory.
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option(LIBCXXABI_ENABLE_SHARED "Build libc++abi as a shared library." ON)
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option(LIBCXXABI_ENABLE_STATIC "Build libc++abi as a static library." ON)
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cmake_dependent_option(LIBCXXABI_INSTALL_STATIC_LIBRARY
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"Install the static libc++abi library." ON
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"LIBCXXABI_ENABLE_STATIC;LIBCXXABI_INSTALL_LIBRARY" OFF)
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cmake_dependent_option(LIBCXXABI_INSTALL_SHARED_LIBRARY
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"Install the shared libc++abi library." ON
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"LIBCXXABI_ENABLE_SHARED;LIBCXXABI_INSTALL_LIBRARY" OFF)
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cmake_dependent_option(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY
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"Statically link the LLVM unwinder to static library" ON
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"LIBCXXABI_ENABLE_STATIC_UNWINDER;LIBCXXABI_ENABLE_STATIC" OFF)
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cmake_dependent_option(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY
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"Statically link the LLVM unwinder to shared library" ON
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"LIBCXXABI_ENABLE_STATIC_UNWINDER;LIBCXXABI_ENABLE_SHARED" OFF)
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option(LIBCXXABI_BAREMETAL "Build libc++abi for baremetal targets." OFF)
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# The default terminate handler attempts to demangle uncaught exceptions, which
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# causes extra I/O and demangling code to be pulled in.
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option(LIBCXXABI_SILENT_TERMINATE "Set this to make the terminate handler default to a silent alternative" OFF)
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option(LIBCXXABI_NON_DEMANGLING_TERMINATE "Set this to make the terminate handler
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avoid demangling" OFF)
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if (NOT LIBCXXABI_ENABLE_SHARED AND NOT LIBCXXABI_ENABLE_STATIC)
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message(FATAL_ERROR "libc++abi must be built as either a shared or static library.")
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endif()
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# TODO: This is a workaround for the fact that Standalone builds can't use
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# targets from the other runtimes (so the cxx-headers target doesn't exist).
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set(LIBCXXABI_LIBCXX_INCLUDES "" CACHE PATH
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"Specify path to libc++ includes.")
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if (LIBCXXABI_STANDALONE_BUILD)
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if (NOT IS_DIRECTORY ${LIBCXXABI_LIBCXX_INCLUDES})
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message(FATAL_ERROR
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"LIBCXXABI_LIBCXX_INCLUDES=${LIBCXXABI_LIBCXX_INCLUDES} is not a valid directory. "
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"Please provide the path to where the libc++ headers have been installed.")
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endif()
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add_library(cxx-headers INTERFACE)
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if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC" OR "${CMAKE_CXX_SIMULATE_ID}" STREQUAL "MSVC")
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target_compile_options(cxx-headers INTERFACE /I "${LIBCXXABI_LIBCXX_INCLUDES}")
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else()
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target_compile_options(cxx-headers INTERFACE -I "${LIBCXXABI_LIBCXX_INCLUDES}")
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endif()
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endif()
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option(LIBCXXABI_HERMETIC_STATIC_LIBRARY
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"Do not export any symbols from the static library." OFF)
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set(LIBCXXABI_TEST_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/test/lit.site.cfg.in" CACHE STRING
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"The path to the Lit testing configuration to use when running the tests.
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If a relative path is provided, it is assumed to be relative to '<monorepo>/libcxxabi/test/configs'.")
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if (NOT IS_ABSOLUTE "${LIBCXXABI_TEST_CONFIG}")
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set(LIBCXXABI_TEST_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/test/configs/${LIBCXXABI_TEST_CONFIG}")
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endif()
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set(LIBCXXABI_TEST_PARAMS "" CACHE STRING
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"A list of parameters to run the Lit test suite with.")
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#===============================================================================
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# Configure System
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#===============================================================================
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# Add path for custom modules
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set(CMAKE_MODULE_PATH
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
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${CMAKE_MODULE_PATH}
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)
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if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
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set(LIBCXXABI_HEADER_DIR ${LLVM_BINARY_DIR})
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set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE})
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set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
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"Path where built libc++abi libraries should be installed.")
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set(LIBCXXABI_INSTALL_RUNTIME_DIR bin CACHE PATH
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"Path where built libc++abi runtime libraries should be installed.")
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if(LIBCXX_LIBDIR_SUBDIR)
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string(APPEND LIBCXXABI_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR})
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string(APPEND LIBCXXABI_INSTALL_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR})
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endif()
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elseif(LLVM_LIBRARY_OUTPUT_INTDIR)
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set(LIBCXXABI_HEADER_DIR ${LLVM_BINARY_DIR})
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set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
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set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX} CACHE PATH
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"Path where built libc++abi libraries should be installed.")
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set(LIBCXXABI_INSTALL_RUNTIME_DIR bin CACHE PATH
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"Path where built libc++abi runtime libraries should be installed.")
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else()
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set(LIBCXXABI_HEADER_DIR ${CMAKE_BINARY_DIR})
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set(LIBCXXABI_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX})
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set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX} CACHE PATH
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"Path where built libc++abi libraries should be installed.")
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set(LIBCXXABI_INSTALL_RUNTIME_DIR bin CACHE PATH
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"Path where built libc++abi runtime libraries should be installed.")
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endif()
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set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
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# By default, for non-standalone builds, libcxx and libcxxabi share a library
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# directory.
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if (NOT LIBCXXABI_LIBCXX_LIBRARY_PATH)
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set(LIBCXXABI_LIBCXX_LIBRARY_PATH "${LIBCXXABI_LIBRARY_DIR}" CACHE PATH
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"The path to libc++ library." FORCE)
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endif()
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# Check that we can build with 32 bits if requested.
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if (CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32)
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if (LIBCXXABI_BUILD_32_BITS AND NOT LLVM_BUILD_32_BITS) # Don't duplicate the output from LLVM
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message(STATUS "Building 32 bits executables and libraries.")
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endif()
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elseif(LIBCXXABI_BUILD_32_BITS)
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message(FATAL_ERROR "LIBCXXABI_BUILD_32_BITS=ON is not supported on this platform.")
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endif()
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# Declare libc++abi configuration variables.
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# They are intended for use as follows:
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# LIBCXXABI_C_FLAGS: General flags for both the c++ compiler and linker.
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# LIBCXXABI_CXX_FLAGS: General flags for both the c++ compiler and linker.
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# LIBCXXABI_COMPILE_FLAGS: Compile only flags.
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# LIBCXXABI_LINK_FLAGS: Linker only flags.
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# LIBCXXABI_LIBRARIES: libraries libc++abi is linked to.
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set(LIBCXXABI_C_FLAGS "")
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set(LIBCXXABI_CXX_FLAGS "")
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set(LIBCXXABI_COMPILE_FLAGS "")
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set(LIBCXXABI_LINK_FLAGS "")
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set(LIBCXXABI_LIBRARIES "")
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# Include macros for adding and removing libc++abi flags.
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include(HandleLibcxxabiFlags)
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#===============================================================================
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# Setup Compiler Flags
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#===============================================================================
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# Configure target flags
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add_target_flags_if(LIBCXXABI_BUILD_32_BITS "-m32")
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if(LIBCXXABI_TARGET_TRIPLE)
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add_target_flags_if_supported("--target=${LIBCXXABI_TARGET_TRIPLE}")
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elseif(CMAKE_CXX_COMPILER_TARGET)
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set(LIBCXXABI_TARGET_TRIPLE "${CMAKE_CXX_COMPILER_TARGET}")
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endif()
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if(LIBCXX_GCC_TOOLCHAIN)
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add_target_flags_if_supported("--gcc-toolchain=${LIBCXXABI_GCC_TOOLCHAIN}")
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elseif(CMAKE_CXX_COMPILER_EXTERNAL_TOOLCHAIN)
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set(LIBCXXABI_GCC_TOOLCHAIN "${CMAKE_CXX_COMPILER_EXTERNAL_TOOLCHAIN}")
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endif()
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if(LIBCXXABI_SYSROOT)
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add_target_flags_if_supported("--sysroot=${LIBCXXABI_SYSROOT}")
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elseif(CMAKE_SYSROOT)
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set(LIBCXXABI_SYSROOT "${CMAKE_SYSROOT}")
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endif()
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# Configure compiler. Must happen after setting the target flags.
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include(config-ix)
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if (LIBCXXABI_HAS_NOSTDINCXX_FLAG)
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list(APPEND LIBCXXABI_COMPILE_FLAGS -nostdinc++)
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# cmake 3.14 and above remove system include paths that are explicitly
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# passed on the command line. We build with -nostdinc++ and explicitly add
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# just the libcxx system include paths with -I on the command line.
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# Setting CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES effectively prevents cmake
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# from removing these.
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# See: https://gitlab.kitware.com/cmake/cmake/issues/19227
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set(CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES "")
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# Remove -stdlib flags to prevent them from causing an unused flag warning.
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string(REPLACE "--stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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string(REPLACE "--stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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string(REPLACE "-stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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string(REPLACE "-stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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endif()
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# Let the library headers know they are currently being used to build the
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# library.
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add_definitions(-D_LIBCXXABI_BUILDING_LIBRARY)
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# libcxxabi needs to, for various reasons, include the libcpp headers as if
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# it is being built as part of libcxx.
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add_definitions(-D_LIBCPP_BUILDING_LIBRARY)
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# Disable DLL annotations on Windows for static builds.
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if (WIN32 AND LIBCXXABI_ENABLE_STATIC AND NOT LIBCXXABI_ENABLE_SHARED)
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if (LIBCXX_ENABLE_SHARED AND LIBCXX_ENABLE_STATIC_ABI_LIBRARY)
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# Building libcxxabi statically, but intending for it to be statically
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# linked into a shared libcxx; keep dllexport enabled within libcxxabi,
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# as the symbols will need to be exported from libcxx.
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else()
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# Regular static build; disable dllexports.
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add_definitions(-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS)
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endif()
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endif()
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add_compile_flags_if_supported(-Werror=return-type)
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# Get warning flags
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add_compile_flags_if_supported(-W)
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add_compile_flags_if_supported(-Wall)
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add_compile_flags_if_supported(-Wchar-subscripts)
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add_compile_flags_if_supported(-Wconversion)
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add_compile_flags_if_supported(-Wmismatched-tags)
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add_compile_flags_if_supported(-Wmissing-braces)
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add_compile_flags_if_supported(-Wnewline-eof)
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add_compile_flags_if_supported(-Wunused-function)
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add_compile_flags_if_supported(-Wshadow)
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add_compile_flags_if_supported(-Wshorten-64-to-32)
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add_compile_flags_if_supported(-Wsign-compare)
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add_compile_flags_if_supported(-Wsign-conversion)
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add_compile_flags_if_supported(-Wstrict-aliasing=2)
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add_compile_flags_if_supported(-Wstrict-overflow=4)
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add_compile_flags_if_supported(-Wunused-parameter)
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add_compile_flags_if_supported(-Wunused-variable)
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add_compile_flags_if_supported(-Wwrite-strings)
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add_compile_flags_if_supported(-Wundef)
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add_compile_flags_if_supported(-Wno-suggest-override)
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if (LIBCXXABI_ENABLE_WERROR)
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add_compile_flags_if_supported(-Werror)
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add_compile_flags_if_supported(-WX)
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else()
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add_compile_flags_if_supported(-Wno-error)
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add_compile_flags_if_supported(-WX-)
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endif()
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if (LIBCXXABI_ENABLE_PEDANTIC)
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add_compile_flags_if_supported(-pedantic)
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endif()
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# Get feature flags.
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add_compile_flags_if_supported(-fstrict-aliasing)
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# Exceptions
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if (LIBCXXABI_ENABLE_EXCEPTIONS)
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# Catches C++ exceptions only and tells the compiler to assume that extern C
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# functions never throw a C++ exception.
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add_compile_flags_if_supported(-EHsc)
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# Do we really need to be run through the C compiler ?
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add_c_compile_flags_if_supported(-funwind-tables)
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else()
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add_compile_flags_if_supported(-fno-exceptions)
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add_compile_flags_if_supported(-EHs-)
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add_compile_flags_if_supported(-EHa-)
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endif()
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# Assert
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string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
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if (LIBCXXABI_ENABLE_ASSERTIONS)
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# MSVC doesn't like _DEBUG on release builds. See PR 4379.
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if (NOT MSVC)
|
|
list(APPEND LIBCXXABI_COMPILE_FLAGS -D_DEBUG)
|
|
endif()
|
|
# On Release builds cmake automatically defines NDEBUG, so we
|
|
# explicitly undefine it:
|
|
if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
|
|
list(APPEND LIBCXXABI_COMPILE_FLAGS -UNDEBUG)
|
|
endif()
|
|
else()
|
|
if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
|
|
list(APPEND LIBCXXABI_COMPILE_FLAGS -DNDEBUG)
|
|
endif()
|
|
endif()
|
|
|
|
# Threading
|
|
if (NOT LIBCXXABI_ENABLE_THREADS)
|
|
if (LIBCXXABI_HAS_PTHREAD_API)
|
|
message(FATAL_ERROR "LIBCXXABI_HAS_PTHREAD_API can only"
|
|
" be set to ON when LIBCXXABI_ENABLE_THREADS"
|
|
" is also set to ON.")
|
|
endif()
|
|
if (LIBCXXABI_HAS_WIN32_THREAD_API)
|
|
message(FATAL_ERROR "LIBCXXABI_HAS_WIN32_THREAD_API can only"
|
|
" be set to ON when LIBCXXABI_ENABLE_THREADS"
|
|
" is also set to ON.")
|
|
endif()
|
|
if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
|
|
message(FATAL_ERROR "LIBCXXABI_HAS_EXTERNAL_THREAD_API can only"
|
|
" be set to ON when LIBCXXABI_ENABLE_THREADS"
|
|
" is also set to ON.")
|
|
endif()
|
|
if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
|
|
message(FATAL_ERROR "LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY can only"
|
|
" be set to ON when LIBCXXABI_ENABLE_THREADS"
|
|
" is also set to ON.")
|
|
endif()
|
|
add_definitions(-D_LIBCXXABI_HAS_NO_THREADS)
|
|
add_definitions(-D_LIBCPP_HAS_NO_THREADS)
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
|
|
if (LIBCXXABI_HAS_PTHREAD_API)
|
|
message(FATAL_ERROR "The options LIBCXXABI_HAS_EXTERNAL_THREAD_API"
|
|
" and LIBCXXABI_HAS_PTHREAD_API cannot be both"
|
|
" set to ON at the same time.")
|
|
endif()
|
|
if (LIBCXXABI_HAS_WIN32_THREAD_API)
|
|
message(FATAL_ERROR "The options LIBCXXABI_HAS_EXTERNAL_THREAD_API"
|
|
" and LIBCXXABI_HAS_WIN32_THREAD_API cannot be both"
|
|
" set to ON at the same time.")
|
|
endif()
|
|
if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
|
|
message(FATAL_ERROR "The options LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY"
|
|
" and LIBCXXABI_HAS_EXTERNAL_THREAD_API cannot be both"
|
|
" set to ON at the same time.")
|
|
endif()
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_PTHREAD_API)
|
|
if (LIBCXXABI_HAS_WIN32_THREAD_API)
|
|
message(FATAL_ERROR "The options LIBCXXABI_HAS_PTHREAD_API"
|
|
"and LIBCXXABI_HAS_WIN32_THREAD_API cannot be both"
|
|
"set to ON at the same time.")
|
|
endif()
|
|
endif()
|
|
|
|
if (LLVM_ENABLE_MODULES)
|
|
# Ignore that the rest of the modules flags are now unused.
|
|
add_compile_flags_if_supported(-Wno-unused-command-line-argument)
|
|
add_compile_flags(-fno-modules)
|
|
endif()
|
|
|
|
set(LIBCXXABI_HAS_UNDEFINED_SYMBOLS OFF)
|
|
if ((NOT LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS)
|
|
OR (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY AND LIBCXXABI_ENABLE_SHARED)
|
|
OR MINGW)
|
|
set(LIBCXXABI_HAS_UNDEFINED_SYMBOLS ON)
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_UNDEFINED_SYMBOLS)
|
|
# Need to allow unresolved symbols if this is to work with shared library builds
|
|
if (APPLE)
|
|
list(APPEND LIBCXXABI_LINK_FLAGS "-undefined dynamic_lookup")
|
|
else()
|
|
# Relax this restriction from HandleLLVMOptions
|
|
string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
|
|
endif()
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_PTHREAD_API)
|
|
add_definitions(-D_LIBCPP_HAS_THREAD_API_PTHREAD)
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_WIN32_THREAD_API)
|
|
add_definitions(-D_LIBCPP_HAS_THREAD_API_WIN32)
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
|
|
add_definitions(-D_LIBCPP_HAS_THREAD_API_EXTERNAL)
|
|
endif()
|
|
|
|
if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
|
|
add_definitions(-D_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL)
|
|
endif()
|
|
|
|
# Prevent libc++abi from having library dependencies on libc++
|
|
add_definitions(-D_LIBCPP_DISABLE_EXTERN_TEMPLATE)
|
|
|
|
if (MSVC)
|
|
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
|
|
endif()
|
|
|
|
# Define LIBCXXABI_USE_LLVM_UNWINDER for conditional compilation.
|
|
if (LIBCXXABI_USE_LLVM_UNWINDER)
|
|
add_definitions(-DLIBCXXABI_USE_LLVM_UNWINDER)
|
|
endif()
|
|
|
|
if (LIBCXXABI_SILENT_TERMINATE)
|
|
add_definitions(-DLIBCXXABI_SILENT_TERMINATE)
|
|
endif()
|
|
|
|
if (LIBCXXABI_NON_DEMANGLING_TERMINATE)
|
|
add_definitions(-DLIBCXXABI_NON_DEMANGLING_TERMINATE)
|
|
endif()
|
|
|
|
if (LIBCXXABI_BAREMETAL)
|
|
add_definitions(-DLIBCXXABI_BAREMETAL)
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_COMMENT_LIB_PRAGMA)
|
|
if (LIBCXXABI_HAS_PTHREAD_LIB)
|
|
add_definitions(-D_LIBCXXABI_LINK_PTHREAD_LIB)
|
|
endif()
|
|
endif()
|
|
|
|
string(REPLACE ";" " " LIBCXXABI_CXX_FLAGS "${LIBCXXABI_CXX_FLAGS}")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXXABI_CXX_FLAGS}")
|
|
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${LIBCXXABI_C_FLAGS}")
|
|
|
|
#===============================================================================
|
|
# Setup Source Code
|
|
#===============================================================================
|
|
|
|
set(LIBCXXABI_LIBUNWIND_INCLUDES "${LIBCXXABI_LIBUNWIND_INCLUDES}" CACHE PATH
|
|
"Specify path to libunwind includes." FORCE)
|
|
set(LIBCXXABI_LIBUNWIND_PATH "${LIBCXXABI_LIBUNWIND_PATH}" CACHE PATH
|
|
"Specify path to libunwind source." FORCE)
|
|
|
|
include_directories(include)
|
|
if (LIBCXXABI_USE_LLVM_UNWINDER OR LLVM_NATIVE_ARCH MATCHES ARM)
|
|
find_path(LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL libunwind.h
|
|
PATHS ${LIBCXXABI_LIBUNWIND_INCLUDES}
|
|
${LIBCXXABI_LIBUNWIND_PATH}/include
|
|
${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBUNWIND_INCLUDES}
|
|
${LLVM_MAIN_SRC_DIR}/projects/libunwind/include
|
|
${LLVM_MAIN_SRC_DIR}/runtimes/libunwind/include
|
|
${LLVM_MAIN_SRC_DIR}/../libunwind/include
|
|
NO_DEFAULT_PATH
|
|
NO_CMAKE_FIND_ROOT_PATH
|
|
)
|
|
|
|
if (LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL STREQUAL "LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL-NOTFOUND")
|
|
set(LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL "")
|
|
endif()
|
|
|
|
if (NOT LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL STREQUAL "")
|
|
include_directories("${LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL}")
|
|
endif()
|
|
endif()
|
|
|
|
# Add source code. This also contains all of the logic for deciding linker flags
|
|
# soname, etc...
|
|
add_subdirectory(src)
|
|
|
|
if (LIBCXXABI_INCLUDE_TESTS)
|
|
add_subdirectory(test)
|
|
add_subdirectory(fuzz)
|
|
endif()
|